Speaking about romance in Doctor Who, Capaldi acknowledged the show had to change.

‘The show has changed from the one that I grew up with and you have to recognise that and go with it,’ he said.

‘It’s a new thing. There’s a deeper well of love in it that was only touched upon in the [classic] show when William Hartnell (the first Doctor) said goodbye to his granddaughter. It was clear then that there was deep bond. And in a way… we touch on that again.’

However Jenna Coleman who plays current companion Clara Oswald says it’s not going to be an easy relationship between the pair.

‘She struggles with him and he’s a lot more of a handful for her and I think he has a mad curiosity that pushes him to different limits that really tests her. It’s not easy, but they’re bound together. ‘